What is an ADC?ADC stands for analogue-to-digital converter. It is an electronic device that converts input analog voltage to a discrete digital number.Applications include anything that involves the processing of analogue signals into digital form.

What is A/D?
An electronic circuit that converts a continuously varying signal (temperature, pressure, voltage, etc.) into digital number comprising zeroes and ones.Applications include anything that involves the digital processing of signals by a digital signal processor, microprocessor or microcontroller.